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Related Experiment Video

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Assessing Teratogenic Changes in a Zebrafish Model of Fetal Alcohol Exposure
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Ethanol exposure represses osteogenesis in the developing chick embryo.

Zhong-Yang Li1, Zheng-Lai Ma1, Wen-Hui Lu1

  • 1Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University, Guangzhou 510632, China.

Reproductive Toxicology (Elmsford, N.Y.)
|April 27, 2016
PubMed
Summary
This summary is machine-generated.

Ethanol exposure during embryonic development impairs fetal bone growth by reducing cell proliferation and altering gene expression. This study highlights the risks of prenatal alcohol consumption on skeletal development and fetal alcohol spectrum disorder (FASD).

Keywords:
Chick embryoEthanolMicromass cultureOsteogenesisROS

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Area of Science:

  • Developmental biology
  • Toxicology
  • Orthopedics

Background:

  • Excessive alcohol consumption during pregnancy is linked to fetal alcohol spectrum disorder (FASD).
  • The impact of ethanol on fetal bone development remains largely uncharacterized.
  • Understanding ethanol's teratogenic effects on skeletal morphogenesis is crucial for prenatal health.

Purpose of the Study:

  • To investigate the effects of embryonic ethanol exposure on bone development.
  • To elucidate the mechanisms underlying ethanol-induced skeletal abnormalities.
  • To assess ethanol's impact on craniofacial bone progenitors.

Main Methods:

  • Treatment of gastrulating chick embryos with ethanol.
  • Histological analysis of long bone development (humerus, radius, ulna).
  • Assessment of cell proliferation, alkaline phosphatase activity, chondrogenesis, reactive oxygen species (ROS) production, and gene expression.

Main Results:

  • Ethanol exposure inhibited long bone development and chondrogenesis.
  • Reduced proliferation and hypertrophic zones, repressed cell proliferation and alkaline phosphatase activity were observed.
  • Ethanol induced excess ROS production and altered osteogenesis-related gene expression, also affecting flat bone and cranial neural crest cell generation.

Conclusions:

  • Embryonic ethanol exposure retards bone development.
  • Excessive ROS production and altered bone-associated gene expression are key mechanisms.
  • Prenatal alcohol exposure poses a significant risk to skeletal development and craniofacial formation.